Flash Flood in Putnam County, New York
Flash Flood July 10, 2023 · Putnam County, New York
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Flooding and road closure on NY 292 both directions between start route NY 292 NY 311 Patterson and End Route NY 55 Pawling. All lanes of 2 blocked.
The wider storm
A stalled frontal boundary remained over the area which produced multiple rounds of torrential rainfall form heavy thunderstorms from July 9th through July 10th. CAPE values of 2500 to 3500 J/kg and PWAT values of near 1.8 allowed heavy thunderstorm development to produce rainfall rates of 2-3 inches per hour at times. There were parts of the area that receive anywhere from 3-5 inches of rain in a several hour period with some spots seeing upwards of 8 inches. This allowed for the issuance of a localized Flash Flood Emergency for portion of the Lower Hudson Valley.
Began near Patterson (41.5151, -73.6150).
Source: NOAA Storm Events Database, event 1122114. Narratives are written by the National Weather Service forecast office that issued the report.
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